DE2202229A1 - - Google Patents

Info

Publication number
DE2202229A1
DE2202229A1 DE19722202229 DE2202229A DE2202229A1 DE 2202229 A1 DE2202229 A1 DE 2202229A1 DE 19722202229 DE19722202229 DE 19722202229 DE 2202229 A DE2202229 A DE 2202229A DE 2202229 A1 DE2202229 A1 DE 2202229A1
Authority
DE
Germany
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19722202229
Other languages
German (de)
Other versions
DE2202229B2 (de
DE2202229C2 (fr
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to DE19722202229 priority Critical patent/DE2202229B2/de
Publication of DE2202229B2 publication Critical patent/DE2202229B2/de
Publication of DE2202229A1 publication Critical patent/DE2202229A1/de
Priority to IT1928773A priority patent/IT978218B/it
Application granted granted Critical
Publication of DE2202229C2 publication Critical patent/DE2202229C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
DE19722202229 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen Granted DE2202229B2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19722202229 DE2202229B2 (de) 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen
IT1928773A IT978218B (it) 1972-01-18 1973-01-17 Disposizione circuitale per rice vitori di piu frequenze a guadagno regolato in impianti di telecomuni cazioni specie in impianti telefo nici

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722202229 DE2202229B2 (de) 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen

Publications (3)

Publication Number Publication Date
DE2202229B2 DE2202229B2 (de) 1972-09-21
DE2202229A1 true DE2202229A1 (fr) 1972-09-21
DE2202229C2 DE2202229C2 (fr) 1975-07-03

Family

ID=5833314

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722202229 Granted DE2202229B2 (de) 1972-01-18 1972-01-18 Schaltungsanordnung fuer geregeglte mehrfrequenzempfaenger in fernmelde-, insbesondere fernsprechanlagen

Country Status (2)

Country Link
DE (1) DE2202229B2 (fr)
IT (1) IT978218B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460808A (en) * 1982-08-23 1984-07-17 At&T Bell Laboratories Adaptive signal receiving method and apparatus

Also Published As

Publication number Publication date
DE2202229B2 (de) 1972-09-21
IT978218B (it) 1974-09-20
DE2202229C2 (fr) 1975-07-03

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee